I second How to Cook Without a Book - the results are incredible and you learn a lot. Especially for a guy - the way it’s structured may appeal to you.
Since I’ve been so busy lately, I’ve been buying chicken breasts when they’re on sale, whipping up a bunch of marinade (search allrecipes.com for a marinade that appeals to you, or you could just use the storebought stuff) and freezing them in individual portions and in twosies for me and Himself. That way, when you thaw it (take it out the morning you want to eat it for dinner and put it in the fridge, or maybe half an hour before you need it put it in the sink and run COLD water over it, still in the bag) it’s already marinated. After that you just have to toss it in an oven at 350, covered, for maybe 25 or 30 minutes (check it with a thermometer - you do have a thermometer, right? USDA says it should be over 165.) and it will be so moist, tender, and flavorful - plus you can use the rest of the stuff in the pan as a sauce. Couldn’t be easier, as long as you plan a little bit beforehand. Also, that’s one way to do one recipe that comes out to single servings that you can eat as far apart as you like.
For a side to that I either toss some of them Steamfresh veggies in the microwave if I’m in a real hurry, or I do one of two super incredibly easy potato recipes:
Cajun sweet potato fries
Take a sweet potato (or more than one, whatever). Peel it. Cut it into discs, maybe half an inch thick, maybe a little thinner. Spread them out on a baking sheet and drizzle with olive oil. Take some cajun seasoning (I use the stuff from Penzey’s, but they sell cajun seasoning at the grocery store), sprinkle heavily. Stick in the oven at, oh, let’s say 400. Take them out when they’re forkable.
Mom’s (everybody’s mom) Onion Soup Potatoes
Take some new (red) potatoes, or fingerlings, or any little potato. Cut them in half or fourths or whatever seems like a reasonable size for them all to be the same size. Dump them in a bowl and toss them with some olive oil and a packet of dry onion soup mix. Spread them out on a baking sheet and bake at 400 for as long as it takes - it should be about 40 minutes but it depends on the size you made your potatoes and how full the pan is.
Both of those potato things are easy, not too unhealthy, and good enough to serve to a crowd. They’re also pretty scalable. In fact, you could serve your mom those premarinated chicken breasts, some Steamfresh corn, and either potato thing and she’d think you’d gotten to be a pretty servicable cook.
ETA - want to know what I’m making right now? This is such a nostalgic pleasure. Get yourself a sweet onion - it can’t just be a regular yellow or white one, it has to be a Vidalia or some other sweet onion. Nice big one. You whack off the top bit and the bottom bit and you peel it. Then you take your knife and you cut it twice perpendicularly about halfway down the onion from the top - the idea is that you want to be able to spread it out a bit but you don’t want it to break and fall apart. Stick a beef bullion cube in the middle of it (this is the only thing I use those cubes for) and stuff some butter down among the “petals” of the thing. Wrap it in foil and bake at 375 for maybe an hour and fifteen minutes. It comes out tasting like awesome. Make sure you tip it into a bowl when you unwrap it so you get all the, uh, salty beefy butter.